When researchers think about flower effects on bees, they typically consider floral abundance to be the most important factor, but we found that the distribution of flowers throughout a season was most important for bumble bees
," Ogilvie said.
I have echiums in my garden, which can have a dozen bumble bees
working away on each spike at any one time
Although distributions of bumble bees
in the United States have been defined broadly (Franklin, 1913; Mitchell, 1962), most range-wide treatments are dated and rarely contain geographically discrete records of occurrence.
Over the past few years, one bumble bee
in particular, the western bumble bee
, Bombus occidentalis, has caught his eye.
Despite this there remains deep concern that the overall number of bumble bees
continues to fall, and the effects of this on pollination of wild and cultivated plants.
So a detailed study into the lifecycle of the bumble bee
was commissioned as a starting point to solving the quandary.
become active quite early in the morning and continue until dark.
The common species are using gardens where people have flowers, but as we are losing the countryside flowers we are losing our bumble bees
, they are just disappearing and at least two species have become extinct in Durham in the last 20 years.
have a good reason for all that flying around.
Western carpenter bees are also large, shiny, sometimes metallic, and are shaped like bumble bees